Tremlet Cells occur when a person becomes infected with the Human Reanimation Virus. The name is given in Zombie Apocalypse: Fight Back but the phenomenon is mentioned in Zombie Apocalypse.
Role in Human-To-Zombie Transformation[]
It seems that the virus gathers cells into a "rose" pattern like in the old ryhm "Ring around a rosie". These are the "zombie cells" baiscally and speeds up HTZT.
Prevention[]
There is none and your cells are doomed to becoming Tremlet Cells.